ASTM A403/A403M-10a
(Specification)Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ABSTRACT
This specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. All fittings shall undergo heat-treatment. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium. Tension test shall be done on the fitting material to determine the tensile properties such as yield strength and tensile strength. Fittings supplied under this specification shall be examined visually for surface discontinuities, surface checks, and mechanical marks.
SCOPE
1.1 This specification covers wrought stainless steel fittings for pressure piping applications.
1.2 Several grades of austenitic stainless steel alloys are included in this specification Grades are designated with a prefix, WP or CR, based on the applicable ASME or MSS dimensional and rating standards, respectively.
1.3 For each of the WP stainless grades, several classes of fittings are covered, to indicate whether seamless or welded construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of nondestructive examination (NDE). Table 1 is a general summary of the fitting classes applicable to all WP grades of stainless steel covered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in Specifications A351/A351M, A743/A743M, and A744/A744M.
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Designation: A403/A403M – 10a
Standard Specification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA403/A403M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
3
1.1 This specification covers wrought stainless steel fittings 2.1 ASTM Standards:
2
for pressure piping applications. A351/A351M Specification for Castings, Austenitic, for
1.2 Several grades of austenitic stainless steel alloys are Pressure-Containing Parts
included in this specification Grades are designated with a A743/A743M Specification for Castings, Iron-Chromium,
prefix, WP or CR, based on the applicable ASME or MSS Iron-Chromium-Nickel, Corrosion Resistant, for General
dimensional and rating standards, respectively. Application
1.3 For each of the WP stainless grades, several classes of A744/A744M Specification for Castings, Iron-Chromium-
fittings are covered, to indicate whether seamless or welded Nickel, Corrosion Resistant, for Severe Service
construction was utilized. Class designations are also utilized A751 Test Methods, Practices, andTerminology for Chemi-
to indicate the nondestructive test method and extent of cal Analysis of Steel Products
nondestructive examination (NDE). Table 1 is a general A960/A960M Specification for Common Requirements for
summary of the fitting classes applicable to all WP grades of Wrought Steel Piping Fittings
stainless steel covered by this specification. There are no E112 Test Methods for Determining Average Grain Size
classes for the CR grades. Specific requirements are covered E165 PracticeforLiquidPenetrantExaminationforGeneral
elsewhere. Industry
4
1.4 This specification is expressed in both inch-pound units 2.2 ASME Standards:
and in SI units. However, unless the order specifies the ASME B16.9 Factory-Made Wrought Steel Butt-Welding
applicable “M” specification designation (SI units), the mate- Fittings
rial shall be furnished to inch-pound units. ASME B16.11 Forged Steel Fittings, Socket-Welding and
1.5 The values stated in either SI units or inch-pound units Threaded
5
are to be regarded separately as standard. Within the text, the 2.3 MSS Standards:
SI units are shown in brackets. The values stated in each MSS SP-25 Standard Marking System for Valves, Fittings,
system may not be exact equivalents; therefore, each system Flanges, and Unions
shall be used independently of the other. Combining values MSS SP-43 Standard Practice for Light Weight Stainless
from the two systems may result in non-conformance with the Steel Butt-Welding Fittings
standard. MSS SP-79 Socket-Welding Reducer Inserts
1.6 This specification does not apply to cast steel fittings. MSS SP-83 Steel Pipe Unions, Socket-Welding and
Austenitic stainless steel castings are covered in Specifications Threaded
A351/A351M, A743/A743M, and A744/A744M. MSS SP-95 Swage(d) Nipples and Bull Plugs
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.22 on SteelForgingsandWroughtFittingsforPipingApplicationsandBolting the ASTM website.
4
Materials for Piping and Special Purpose Applications. Available from American Society of Mechanical Engineers (ASME), ASME
Current edition approved Dec. 1, 2010. Published January 2011. Originally International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
approved in 1956. Last previous edition approved in 2010 as A403/A403M–10. www.asme.org.
5
DOI: 10.1520/A0403_A0403M-10a. AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
cation SA-403 in Section II of that Code. hq.com.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A403/A403M – 10a
MSS SP-97 Integrally Reinforced Forged Branch Outlet 5. Manufacture
Fittings—Socket Welding, Threaded and Buttwelding
5.1 Forming—Forging or shaping operations may be per-
Ends
formedbyhammering,pressin
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A403/A403M–10 Designation: A403/A403M – 10a
Standard Specification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA403/A403M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
2
1.1 This specification covers wrought stainless steel fittings for pressure piping applications.
1.2 Several grades of austenitic stainless steel alloys are included in this specification Grades are designated with a prefix, WP
or CR, based on the applicable ASME or MSS dimensional and rating standards, respectively.
1.3 For each of the WP stainless grades, several classes of fittings are covered, to indicate whether seamless or welded
construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of
nondestructiveexamination(NDE).Table1isageneralsummaryofthefittingclassesapplicabletoallWPgradesofstainlesssteel
covered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
“M” specification designation (SI units), the material shall be furnished to inch-pound units.
1.5 ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in Specifications
A351/A351M, A743/A743M, and A744/A744M.
2. Referenced Documents
3
2.1 ASTM Standards:
A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts A370Test Methods and Definitions for
Mechanical Testing of Steel Products
A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Applica-
tion
A744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
E112 Test Methods for Determining Average Grain Size
E165 Practice for Liquid Penetrant Examination for General Industry
4
2.2 ASME Standards:
ASME B16.9 Factory-Made Wrought Steel Butt-Welding Fittings
ASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded
5
2.3 MSS Standards:
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and Unions
MSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings
MSS SP-79 Socket-Welding Reducer Inserts
MSS SP-83 Steel Pipe Unions, Socket-Welding and Threaded
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved MayDec. 1, 2010. Published June 2010.January 2011. Originally approved in 1956. Last previous edition approved in 20092010as
A403/A403M–109. DOI: 10.1520/A0403_A0403M-10a.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-403 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
5
Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A403/A403M–10 Designation: A403/A403M – 10a
Standard Specification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA403/A403M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
2
1.1 This specification covers wrought stainless steel fittings for pressure piping applications.
1.2 Several grades of austenitic stainless steel alloys are included in this specification Grades are designated with a prefix, WP
or CR, based on the applicable ASME or MSS dimensional and rating standards, respectively.
1.3 For each of the WP stainless grades, several classes of fittings are covered, to indicate whether seamless or welded
construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of
nondestructiveexamination(NDE).Table1isageneralsummaryofthefittingclassesapplicabletoallWPgradesofstainlesssteel
covered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
“M” specification designation (SI units), the material shall be furnished to inch-pound units.
1.5 ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in Specifications
A351/A351M, A743/A743M, and A744/A744M.
2. Referenced Documents
3
2.1 ASTM Standards:
A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts A370Test Methods and Definitions for
Mechanical Testing of Steel Products
A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Applica-
tion
A744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
E112 Test Methods for Determining Average Grain Size
E165 Practice for Liquid Penetrant Examination for General Industry
4
2.2 ASME Standards:
ASME B16.9 Factory-Made Wrought Steel Butt-Welding Fittings
ASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded
5
2.3 MSS Standards:
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and Unions
MSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings
MSS SP-79 Socket-Welding Reducer Inserts
MSS SP-83 Steel Pipe Unions, Socket-Welding and Threaded
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved MayDec. 1, 2010. Published June 2010.January 2011. Originally approved in 1956. Last previous edition approved in 20092010as
A403/A403M–109. DOI: 10.1520/A0403_A0403M-10a.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-403 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
5
Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
...
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